A cold storage ceiling suspension connecting device suitable for steel structure

Abstract

The utility model discloses a cold storage ceiling connecting device suitable for steel structure. The device takes I -beam girder as the load -bearing base, installs roof purlin and metal roof panel on the upper portion of girder, and connects keel assembly in the lower portion, and the keel assembly is connected with control box through hanger bar assembly, and the control box is installed on the top of upper cover plate. The cold storage prefabricated slab is formed into a whole by interlocking with the tongue and groove, and the hole filled with rock wool is formed at the position of hanger bar. The upper and lower cover plates with fixed pulleys are arranged in the hole, and the two are connected through steel wire pulling rope, and the joint is provided with rubber strip and filled with sealant. The control box is installed with the inner gear member of ratchet shape, the positioning shaft in the inside is provided with the ratchet gear and spring engaged with the inner gear, and the middle part of the shaft is a threaded shaft. One end of the steel wire pulling rope is wound on the threaded shaft, and the other end is fixed through the limiting hole. The rotation of the shaft can wind the steel wire rope in one direction through the ratchet mechanism, so that the upper and lower cover plates clamp the prefabricated slab. The device effectively blocks the cold bridge effect and improves the sealing and heat preservation performance.

Description

Technical Field

[0001] This utility model belongs to the field of cold storage construction technology, specifically relating to a cold storage ceiling connection device suitable for steel structures. Background Technology

[0002] The construction of the ceiling panels for cold storage within a steel structure space must be carried out after the main steel structure is hoisted. Their stability and insulation are crucial to the overall performance of the cold storage. Existing technologies include some methods that use prefabricated cold storage panels with self-retained tongue-and-groove joints to fix the hoisting components. While this is beneficial for insulation, the prefabricated panels have many gaps, and a cold bridge effect still exists at the interface between the hoisting components and the prefabricated panels. Furthermore, component replacement and maintenance are difficult. Other technologies use T-shaped components for support or internal insulation material, which improves cold bridges but easily forms protrusions at hoisting nodes, affecting aesthetics and flatness. Still other technologies use on-site polyurethane foam insulation, which can alleviate cold bridges but poses construction hazards and future fire safety risks, making it difficult to meet the safety requirements of medium to large-sized cold storage facilities. Utility Model Content

[0003] The purpose of this invention is to provide a cold storage ceiling connection device suitable for steel structures, in order to solve the problems of cold bridging and installation and maintenance of cold storage ceiling panels in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a cold storage ceiling connection device suitable for steel structures, including a main beam, a roof purlin installed on the upper part of the main beam, a metal roof panel installed on the upper part of the roof purlin, a keel assembly installed on the lower part of the main beam, a hanger assembly installed on the lower part of the keel assembly, a cold storage prefabricated panel installed on the lower part of the hanger assembly, holes provided on the cold storage prefabricated panel corresponding to the positions of the hanger assembly, an upper cover plate and a lower cover plate installed inside the holes, fixed pulleys provided on the side of the upper cover plate and the lower cover plate facing the holes, a steel wire pull rope connected between the fixed pulleys of the upper cover plate and the lower cover plate, and a control box provided on the top of the upper cover plate; The control box includes a limiting groove, a threaded hole, and a limiting hole. The limiting groove is located inside the control box, the threaded hole is located at the top of the control box, and the limiting hole is located at the front of the control box. A ratchet-shaped fixed internal gear component is installed inside the limiting groove. The ratchet-shaped fixed internal gear component is square on the outside and round on the inside. A ratchet-shaped fixed internal gear is installed inside the ratchet-shaped fixed internal gear component. A positioning shaft is installed inside the ratchet-shaped fixed internal gear component. A rotating groove is provided at the front end of the positioning shaft. The positioning shaft is provided with a ratchet-shaped external gear that matches the ratchet-shaped fixed internal gear. A ratchet-shaped external gear spring is provided between the ratchet-shaped external gear and the positioning shaft. The middle part of the positioning shaft is a threaded shaft.

[0005] In a further technical solution, the main beam is an I-beam.

[0006] In a further technical solution, the keel assembly includes a crossbar, which is installed at the bottom of the main beam, and a longitudinal bar is installed at the bottom of the crossbar.

[0007] In a further technical solution, the suspension rod assembly includes an upper suspension rod, a lower suspension rod, and a turnbuckle. The top end of the upper suspension rod is welded to the keel assembly and the main beam. The upper suspension rod and the lower suspension rod are movably connected by the turnbuckle. The free end of the lower suspension rod is movably connected to the threaded hole of the control box.

[0008] In a further technical solution, the sides of the prefabricated cold storage panels are provided with tongue and groove joints, and the prefabricated cold storage panels are joined together to form a whole.

[0009] In a further technical solution, adhesive strips are provided on the upper and lower cover plates near the fixed pulleys, and sealant is filled between the adhesive strips on the upper and lower cover plates and the prefabricated cold storage slab.

[0010] In a further technical solution, rock wool is provided between the upper cover plate and the lower cover plate.

[0011] In a further technical solution, one end of the steel wire pulling rope is wound around the threaded shaft, and the other end is fixed inside the limiting hole.

[0012] Beneficial effects: 1. This utility model utilizes the tongue-and-groove interlocking of prefabricated cold storage panels, with the sealant filling the gaps between the upper and lower cover panels and the prefabricated cold storage panels. Furthermore, an integrated rock wool block is installed between the upper and lower cover panels. This multi-layered sealing and insulation structure effectively reduces heat conduction loss, significantly reduces the cold bridge effect, and improves the overall insulation and energy-saving performance of the cold storage.

[0013] 2. This utility model achieves directional rotation clamping through the cooperation of the ratchet fixed internal gear component and the positioning rotating shaft. During installation, it is only necessary to rotate the rotating groove with a flat-head screwdriver to complete the fixing. During disassembly, the component can be replaced by cutting the limit end of the steel wire pull rope, which greatly simplifies the construction and maintenance process and takes into account both aesthetics and economy. Attached Figure Description

[0014] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 and Figure 2 A structural schematic diagram of a cold storage ceiling connection device suitable for steel structures provided in this embodiment of the present utility model; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figures 4 to 6This is a schematic diagram of the control box structure of a cold storage ceiling connection device suitable for steel structures, provided as an embodiment of the present utility model.

[0015] in: 1. Main beam; 2. Keel assembly; 3. Hanger assembly; 4. Precast cold storage slab; 5. Top cover plate; 6. Bottom cover plate; 7. Fixed pulley; 8. Control box; 9. Adhesive strip; 10. Sealant; 11. Rock wool; 101. Roof purlin; 102. Metal roof panel; 201. Horizontal bar; 202. Vertical bar; 301. Upper hanger; 302. Lower hanger; 303. Turnbuckle; 401. Hole; 402. Tongue and groove; 701. Steel wire pull rope; 801. Limiting groove; 802. Threaded hole; 803. Limiting hole; 804. Racket-shaped fixed internal gear assembly; 805. Racket-shaped fixed internal gear; 806. Positioning shaft; 807. Rotating groove; 808. Racket-shaped external gear; 809. Racket-shaped external gear spring; 810. Threaded shaft. Detailed Implementation

[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Example: like Figures 1 to 6As shown, this utility model embodiment provides a cold storage ceiling connection device suitable for steel structures, including a main beam 1, a roof purlin 101 installed on the upper part of the main beam 1, a metal roof panel 102 installed on the upper part of the roof purlin 101, a keel assembly 2 installed on the lower part of the main beam 1, a hanger assembly 3 installed on the lower part of the keel assembly 2, and a cold storage prefabricated slab 4 installed on the lower part of the hanger assembly 3. The cold storage prefabricated slab 4 has holes 401 corresponding to the hanger assembly 3. An upper cover plate 5 and a lower cover plate 6 are installed inside the holes 401. Fixed pulleys 7 are provided on the side of the upper cover plate 5 and the lower cover plate 6 facing the holes 401. A steel wire pull rope 701 connects the fixed pulleys 7 of the upper cover plate 5 and the lower cover plate 6. A control box 8 is provided on the top of the upper cover plate 5. The control box 8 includes a limiting groove 801 and a threaded hole. The control box 8 has a limiting groove 801 inside and a threaded hole 802 at the top. The limiting groove 801 is located inside the control box 8, and the threaded hole 802 is located at the top of the control box 8. The limiting hole 803 is located at the front of the control box 8. A ratchet-shaped fixed internal gear component 804 is installed inside the limiting groove 801. The ratchet-shaped fixed internal gear component 804 has an outer square and inner round shape. A ratchet-shaped fixed internal gear 805 is installed inside the ratchet-shaped fixed internal gear component 804. A positioning shaft 806 is installed inside the ratchet-shaped fixed internal gear component 804. A rotating groove 807 is provided at the front end of the positioning shaft 806. A ratchet-shaped external gear 808 is provided on the positioning shaft 806 to match the ratchet-shaped fixed internal gear 805. A ratchet-shaped external gear spring 809 is provided between the ratchet-shaped external gear 808 and the positioning shaft 806. A threaded shaft 810 is located in the middle of the positioning shaft 806.

[0018] This embodiment of the utility model uses a steel structure main beam as the load-bearing foundation. Steel structure roof purlins 101 and steel structure metal roof panels 102 are sequentially installed on the upper part of the main beam 1. A cold storage ceiling keel assembly 2 is installed on the lower part of the main beam 1. The lower part of the keel assembly 2 is connected to a control box 8 via a hanger assembly 3, and the control box 8 is fixed to the top of the upper cover plate 5. Holes 401 matching 11 integrated rock wool blocks are opened at corresponding positions on the cold storage precast slab 4. The upper cover plate 5 and lower cover plate 6 are located on opposite sides of the precast slab within the holes 401, and are connected by a steel wire pull rope 701 via a fixed pulley 7. Adhesive strips 9 are installed at the gaps between the upper and lower cover plates 6 and the precast slab, and sealant 10 is filled in the holes 401. Rock wool 11 is filled inside the holes 401. The control box 8 has a limiting groove 801 for the steel wire pull rope 701. A ratchet-shaped fixed internal gear component 804 with an outer square and inner round shape is installed inside the groove. A positioning shaft 806 inside has ratchet-shaped external gears 808 at both ends, meshing with the internal gears and provided with elasticity by ratchet-shaped external gear springs 809. The positioning shaft 806 has a threaded shaft 810 in the middle and a rotating groove 807 at the front end. One end of the steel wire pull rope 701 is wound around the threaded shaft 810, and the other end passes through the limiting hole 803 at the front of the control box 8 and is fixed by the limiting end. During installation, rotating the positioning shaft 806 utilizes the unidirectional rotation characteristic of the ratchet gear to wind the steel wire pull rope 701, causing the upper cover plate 5 and lower cover plate 6 to clamp the precast slab. The length of the hanging rod is adjusted using turnbuckles 303 to adjust the ceiling height and level. The upper cover plate 5 and the lower cover plate 6 are filled with rubber strips 9, sealant 10 and internal rock wool 11 to block heat conduction of metal components, significantly reduce the cold bridge effect and improve the insulation performance of cold storage; the ratchet gear and spring in the control box 8 cooperate to realize the one-way locking of the positioning shaft 806, ensuring that the upper cover plate 5 and the lower cover plate 6 are clamped stably and preventing loosening; the integrated design of the overall structure reduces the gaps between prefabricated panels, and the installation and disassembly are convenient through steel wire traction and modular components, which facilitates maintenance and replacement and is suitable for various types of cold storage prefabricated panels 4.

[0019] In one feasible implementation scheme, such as Figure 1 and Figure 2 As shown, the main beam 1 is an I-beam. By using an I-beam as the main beam 1, the upper part supports the roof purlins 101 and the metal roof panel 102, and the lower part connects to the keel assembly 2, bearing the overall load of the ceiling and the prefabricated cold storage slab 4. I-beams have excellent bending and compressive strength, can stably bear the load of the cold storage ceiling, ensure the overall structural rigidity and safety, and meet the load-bearing requirements of the steel structure cold storage.

[0020] In one feasible implementation scheme, such as Figure 1 and Figure 2As shown, the keel assembly 2 includes a crossbar 201, which is installed at the bottom of the main beam 1. A longitudinal bar 202 is installed at the bottom of the crossbar 201. The keel assembly 2 is formed by the crossbar 201 and the longitudinal bar 202. First, the crossbar 201 is installed at the bottom of the main beam 1, and then the longitudinal bar 202 is installed at the bottom of the crossbar 201. The keel assembly 2, composed of the crossbar 201 and the longitudinal bar 202, forms a stable frame structure that effectively distributes the load, evenly transferring the weight of components such as the precast cold storage slab 4 to the main beam 1, improving the overall rigidity of the ceiling, and reducing ceiling swaying and deformation.

[0021] In one feasible implementation scheme, such as Figure 1 and Figure 2 As shown, the suspension rod assembly 3 includes an upper suspension rod 301, a lower suspension rod 302, and a turnbuckle 303. The top end of the upper suspension rod 301 is welded to the keel assembly 2 and the main beam 1. The upper suspension rod 301 and the lower suspension rod 302 are movably connected by the turnbuckle 303. The free end of the lower suspension rod 302 is movably connected to the threaded hole 802 of the control box 8. The suspension rod assembly 3 is composed of the upper suspension rod 301, the lower suspension rod 302, and the turnbuckle 303. The top end of the upper suspension rod 301 is welded to the keel assembly 2 and the main beam 1. The turnbuckle 303 movably connects the upper suspension rod 301 and the lower suspension rod 302. The free end of the lower suspension rod 302 is movably connected to the threaded hole 802 of the control box 8. Turnbuckle 303 can easily adjust the length of the upper hanger 301 and the lower hanger 302, thereby flexibly adjusting the height of the prefabricated cold storage panel 4 to adapt to different installation requirements; the upper hanger 301 adopts a welded connection, which ensures the stability of the connection between the hanger assembly 3 and the keel assembly 2 and the main beam 1, and improves the safety of the entire device.

[0022] In one feasible implementation scheme, such as Figure 2 As shown, the prefabricated cold storage panels 4 have tongue-and-groove joints 402 on their sides, and the prefabricated cold storage panels 4 are interlocked to form a whole through the tongue-and-groove joints 402. By setting the tongue-and-groove joints 402 on the sides of the prefabricated cold storage panels 4, the panels 4 are interlocked with each other during installation to form a whole. The interlocking connection of the tongue-and-groove joints 402 ensures a tight connection between the prefabricated cold storage panels 4, avoids the formation of gaps, enhances the integrity and sealing of the ceiling, reduces the cold bridging effect at gaps, reduces the loss of cold air through the gaps between the prefabricated panels, and helps maintain the low temperature environment inside the cold storage.

[0023] In one feasible implementation scheme, such as Figure 3As shown, the upper cover plate 5 and the lower cover plate 6 are provided with adhesive strips 9 near the fixed pulley 7, and sealant 10 is filled between the adhesive strips 9 and the prefabricated cold storage slab 4. By providing adhesive strips 9 near the fixed pulley 7 on the upper cover plate 5 and the lower cover plate 6, and filling the space between the adhesive strips 9 and the prefabricated cold storage slab 4 with sealant 10 after the upper cover plate 5 and the lower cover plate 6 are installed, the dual function of the adhesive strips 9 and the sealant 10 further enhances the sealing performance at the hole 401, effectively preventing cold air from leaking out of the hole 401, while also preventing external heat and moisture from entering the cold storage, ensuring the insulation effect of the cold storage, reducing energy consumption, and improving the overall insulation performance of the cold storage.

[0024] In one feasible implementation scheme, such as Figures 1 to 3 As shown, rock wool 11 is installed between the upper cover plate 5 and the lower cover plate 6. By installing rock wool 11 between the upper cover plate 5 and the lower cover plate 6, the excellent thermal insulation properties of the rock wool 11 can effectively reduce heat exchange between the inside and outside of the cold storage, further improving the insulation effect of the cold storage, maintaining the stability of the internal temperature, and reducing the operating load of the refrigeration system. Rock wool 11 is a non-combustible material with excellent fire resistance, improving the safety of the cold storage while providing insulation.

[0025] In one feasible implementation scheme, such as Figure 4 and Figure 5 As shown, one end of the steel wire pull rope 701 is wound around the threaded shaft 810, and the other end is fixed inside the limiting hole 803. The steel wire pull rope 701 is fixed by winding one end of the steel wire pull rope 701 around the threaded shaft 810 in the middle of the positioning shaft 806, and passing the other end through the limiting hole 803 at the front of the control box 8, with a limiting end for the end of the steel wire pull rope 701. When the positioning shaft 806 is rotated, the threaded shaft 810 winds the steel wire pull rope 701 to tighten the upper cover plate 5 and the lower cover plate 6; during disassembly, the steel wire pull rope 701 inside the limiting hole 803 is cut. The winding of the steel wire pull rope 701 by the threaded shaft 810 ensures a stable and controllable tightening process, and the limiting hole 803 fixes the steel wire pull rope 701 to prevent it from falling off, ensuring clamping reliability; cutting the steel wire pull rope 701 allows for disassembly, simplifying the maintenance and replacement process and improving the convenience of construction and maintenance.

[0026] In the specific implementation of the cold storage ceiling connection device for steel structures provided in this embodiment of the utility model, firstly, an I-beam is used as the main beam 1 to build the foundation load-bearing structure. Roof purlins 101 are then installed sequentially on the upper part of the main beam 1, and a metal roof panel 102 is fixed on the upper part of the roof purlins 101 to form the roof structure. Simultaneously, a keel assembly 2 is installed at the lower part of the main beam 1. First, horizontal bars 201 are fixed to the bottom of the main beam 1, and then vertical bars 202 are installed at the bottom of the horizontal bars 201. The combination of horizontal bars 201 and vertical bars 202 forms a stable ceiling frame to distribute subsequent loads. Next, the hanger assembly 3 is installed. The top of the upper suspension rod 301 is welded to the keel assembly 2 and the main beam 1 to ensure a stable connection. The upper suspension rod 301 and the lower suspension rod 302 are movably connected using turnbuckles 303, and the overall length of the suspension rod can be flexibly adjusted using the adjustment function of the turnbuckles 303. The free end of the lower suspension rod 302 is movably connected to the threaded hole 802 on the top of the control box 8 to complete the connection between the suspension rod assembly 3 and the control box 8. Subsequently, the cold storage prefabricated panels 4 are processed and installed. Holes 401 matching the 11 integrated rock wool pieces are made in the cold storage prefabricated panels 4 at the positions corresponding to the suspension rod assemblies 3, and tongue and groove joints 402 are processed on the sides of the prefabricated panels. During installation, the cold storage prefabricated panels 4 are interlocked through the tongue and groove joints 402 to form an integral ceiling panel structure, ensuring a tight connection between the prefabricated panels without obvious gaps. After that, the components inside the holes 401 are installed. Inside the hole 401, the upper cover plate 5 is placed above the precast slab and the lower cover plate 6 is placed below the precast slab. Fixed pulleys 7 are installed on the side of both facing the hole 401, and steel wire pulling ropes 701 are connected to the fixed pulleys 7. Adhesive strips 9 are installed on the upper cover plate 5 and the lower cover plate 6 near the fixed pulleys 7. After the upper and lower cover plates 6 are positioned, sealant 10 is filled between the adhesive strips 9 and the cold storage precast slab 4. Simultaneously, rock wool 11 is filled into the space of the hole 401 between the upper cover plate 5 and the lower cover plate 6. The adhesive strips 9, sealant 10, and rock wool 11 enhance the sealing and insulation of the hole 401, preventing the cold bridge effect. Then, the internal components of the control box 8 are assembled and the steel wire pulling operation is performed. A ratchet-shaped fixed internal gear component 804 with an outer square and inner round shape is installed in the limiting groove 801 inside the control box 8. A positioning shaft 806 is installed inside the ratchet-shaped fixed internal gear 805. The positioning shaft 806 has a rotating groove 807 at its front end and a threaded shaft 810 in the middle. A ratchet-shaped external gear 808 that matches the ratchet-shaped fixed internal gear 805 is sleeved on the shaft. A ratchet-shaped external gear spring 809 is provided between the ratchet-shaped external gear 808 and the positioning shaft 806 to provide elastic meshing force. One end of a steel wire pull rope 701 is wound around the threaded shaft 810 of the positioning shaft 806, and the other end passes through the limiting hole 803 at the front of the control box 8. A limiting end is provided at the end for fixation.By inserting a tool into the rotating slot 807 of the positioning shaft 806 and rotating the shaft, the unidirectional rotation characteristic of the ratchet gear causes the threaded shaft 810 to wind the steel wire pulling rope 701, driving the upper cover plate 5 and the lower cover plate 6 closer together and clamping the cold storage prefabricated panel 4. The meshing of the ratchet external gear 808 and the internal gear, along with the elasticity of the spring, achieves unidirectional locking of the positioning shaft 806, ensuring a stable and secure clamping state. Finally, by adjusting the turnbuckles 303 of each hanger assembly 3, the relative lengths of the upper hanger 301 and the lower hanger 302 are adjusted, thereby adjusting the height of the cold storage prefabricated panel 4. This ensures that the entire ceiling structure reaches the designed height and level, guaranteeing a flat and stable ceiling, and completing the installation of the entire cold storage ceiling connection device.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cold storage ceiling suspension connecting device suitable for steel structures, characterized in that: The system includes a main beam (1), a roof purlin (101) installed on the upper part of the main beam (1), a metal roof panel (102) installed on the upper part of the roof purlin (101), a keel assembly (2) installed on the lower part of the main beam (1), a hanger assembly (3) installed on the lower part of the keel assembly (2), a cold storage prefabricated panel (4) installed on the lower part of the hanger assembly (3), a hole (401) is provided on the cold storage prefabricated panel (4) corresponding to the hanger assembly (3), an upper cover plate (5) and a lower cover plate (6) are installed inside the hole (401), a fixed pulley (7) is provided on the side of the upper cover plate (5) and the lower cover plate (6) facing the hole (401), a steel wire pull rope (701) is connected between the fixed pulley (7) of the upper cover plate (5) and the fixed pulley (7) of the lower cover plate (6), and a control box (8) is provided on the top of the upper cover plate (5). The control box (8) includes a limiting groove (801), a threaded hole (802), and a limiting hole (803). The limiting groove (801) is located inside the control box (8), the threaded hole (802) is located at the top of the control box (8), and the limiting hole (803) is located at the front of the control box (8). A ratchet fixed internal gear component (804) is installed inside the limiting groove (801). The ratchet fixed internal gear component (804) is square on the outside and round on the inside. The ratchet fixed internal gear component (804) is designed with a square on the outside and a round on the inside. A ratchet fixed internal gear (805) is provided, and a positioning shaft (806) is installed inside the ratchet fixed internal gear component (804). A rotating groove (807) is provided at the front end of the positioning shaft (806). A ratchet external gear (808) that matches the ratchet fixed internal gear (805) is provided on the positioning shaft (806). A ratchet external gear spring (809) is provided between the ratchet external gear (808) and the positioning shaft (806). A threaded shaft (810) is located in the middle of the positioning shaft (806).

2. The connecting device for the ceiling of a cold storage adapted to a steel structure according to claim 1, characterized in that: The main beam (1) is an I-beam.

3. The connecting device for the ceiling of a cold storage adapted to a steel structure according to claim 1, characterized in that: The keel assembly (2) includes a crossbar (201) which is installed at the bottom of the main beam (1), and a longitudinal bar (202) is installed at the bottom of the crossbar (201).

4. The cold storage ceiling suspension connecting device for steel structure according to claim 1, characterized in that: The suspension rod assembly (3) includes an upper suspension rod (301), a lower suspension rod (302), and a turnbuckle (303). The top end of the upper suspension rod (301) is welded to the keel assembly (2) and the main beam (1). The upper suspension rod (301) and the lower suspension rod (302) are movably connected by the turnbuckle (303). The free end of the lower suspension rod (302) is movably connected to the threaded hole (802) of the control box (8).

5. The cold storage ceiling suspension device for steel structure according to claim 1, characterized in that: The cold storage prefabricated panel (4) is provided with tongue and groove joints (402) on its side, and the cold storage prefabricated panels (4) are interlocked to form an integral whole through the tongue and groove joints (402).

6. The cold storage ceiling suspension connecting device for steel structure according to claim 1, characterized in that: The upper cover plate (5) and the lower cover plate (6) are provided with adhesive strips (9) near the fixed pulley (7), and the adhesive strips (9) of the upper cover plate (5) and the lower cover plate (6) are filled with sealant (10) between them and the prefabricated cold storage panel (4).

7. A cold storage ceiling connection device suitable for steel structures according to claim 1, characterized in that: Rock wool (11) is provided between the upper cover plate (5) and the lower cover plate (6).

8. A cold storage ceiling connection device suitable for steel structures according to claim 1, characterized in that: One end of the steel wire pulling rope (701) is wound around the threaded shaft (810), and the other end is fixed inside the limiting hole (803).

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